On halloween, riki approaches a door in her cat costume and a plastic pumpkin basket in her hand. the adult who is handing out treats has a dish of three kinds of candy: 48 tiny chocolate bars, 24 gummy candies, and 6 taffy chews. riki hates taffy chews. what is the probability she will get either a gummy candy or a chocolate bar? (assume she only gets one treat randomly selected.)
